Resistivity and Resistance Per ANSI/ESD STM11.11
section 12.0
“
CONVERSION TO RESISTIVITY,
When it is appropriate to convert a resistance
obtained by this test method to an equivalent
resistivity in ohms per square, multiply the resistance
measurements obtained by this method by ten. The
conversion factor of ten is derived from the geometry
of the electrode assembly. NOTE: Conversions to
resistivity may not be valid for materials that are
laminated, plated or metallized with conductive
materials. This fact should be understood when
users of this test procedure are required to satisfy
specifications given in
“
ohms/square.
”
Measure Samll Samples or Small Area on a Large
Sample
1. Place the sample to be tested on an insulative
surface.
2. Connect both test leads to the Two-Point-Probe
3. Compress the spring-loaded pins on the
Two-Point-Probe downward onto the sample to
the end. Ensure that your skin does not make
contact with any of the metal on the probe
4. Push the red pushbutton to perform a test.
Should the 15-second electrification period
appear, it may be bypassed by pushing the red
pushbutton a second time.
5. Push the right black pushbutton to save the
measurement if desired.
Measure Floor Materials and Footwear-
Resistance Measurement in Combination with a
Person (ANSI/ESD STM97.1)
1. Connect the red test lead to the Handheld-
Electrode, connect the black lead to the Single-
Surface-Electrode.
2. Put the Single-Surface-Electrode on the floor, a
person stands on the floor and hold the Handheld-
Electrode.
3. Push the red pushbutton to perform a test.
Should the 15-second electrification period
appear, it may be bypassed by pushing the red
pushbutton a second time.
4. Push the right black pushbutton to save the
measurement if desired.
SCS
- 926 JR Industrial Drive, Sanford, NC 27332
East: (919) 718-0000 | West: (909) 627-9634
•
Website:
StaticControl.com
TB-9092
Page 6 of 8 December 2019
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2019 DESCO INDUSTRIES INC
Employee Owned
Maintenance
The Resistance Pro Meter requires little
maintenance. There are no user serviceable parts.
If the meter requires service beyond cleaning the
electrodes or replacing the batteries.
Battery Replacement
Replace the batteries once the battery life indictator
is empty. Open the compartment located on the
back of the meter to replace the batteries. The
meter uses four AA alkaline batteries. Ensure that
the batteries
’
polarities are oriented in the correct
fashion to avoid any possible circuit damage.
Cleaning the Resistance Pro Meter
The area surrounding the test jacks at the top end
of the meter should be wiped with a clean,
isopropanol-alcohol moistened cloth to remove skin
oils that will accumulate and affect the meter
’
s
accuracy at high resistances. The frequency of
cleaning will depend on usage. SCS recommends
cleaning this area once a month. Cable jackets
should also be cleaned in this fashion.
Cleaning the Electrodes
Per ANSI/ESD S4.1
“
Clean the electrodes with a
minimum 70% isopropanol-water solution. Make
sure the electrodes
’
conductive pads are dry prior to
use.
”
See specific product test standards for test lab
specimen cleaning instructions. Per ANSI/ESD S4.1
Worksurfaces
“
The test specimens and electrodes
shall be cleaned twice with a minimum 70%
isopropanol-water solution using a clean, low-linting
cloth each time.
”
(Note: The item should then be
conditioned for 72 hours minimum)
